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Preparation method of chromium stearate

A technology of chromium stearate and stearic acid, which is applied in the field of organic compound preparation, can solve the problems of unfavorable enterprise development and improvement of economic benefits, difficulty in reducing production costs, and difficulty in mass production of enterprises, so as to reduce operating costs and facilitate operation , the effect of saving investment

Inactive Publication Date: 2018-03-20
TIANJIN CHEM REAGENT RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The usual production method of chromium stearate is to utilize sodium stearate to react with chromium sulfate, and the product obtained is a viscous substance, which is difficult to further process and difficult to purify. The problems in this type of preparation method: 1. In the further processing step, Repeated crystallization requires additional crystallization equipment, more equipment, complex production costs and high production costs, making it difficult to reduce production costs; 2. The purity of the finished product is low and there is a lot of dust, which makes it difficult for enterprises to produce in large quantities, which is not conducive to the development of enterprises and the improvement of economic benefits

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The preparation method of this chromium stearate may further comprise the steps:

[0022] 1. Salt-forming reaction steps

[0023] Put 100 moles of stearic acid, 1500 moles of water, 65 moles of chromium oxide, and 20 moles of amine compounds into a 100-liter reactor with a heating device, electric stirring, and a thermometer. React under stirring for 6 hours, stop heating, and the salt-forming reaction is completed.

[0024] 2. Crystallization, drying steps

[0025] The granular product obtained by centrifugation of crystallization is dried in a drying oven in a stainless steel drying sieve with upper and lower air permeability. After 24 hours, the obtained product was sieved to obtain a finished product with a content greater than 99%.

Embodiment 2

[0027] The preparation method of this chromium stearate may further comprise the steps:

[0028] 1. Salt-forming reaction steps

[0029] Put 100 moles of stearic acid, 1500 moles of water, 65 moles of chromium oxide, and 30 moles of amine compounds into a 100-liter reactor with a heating device, electric stirring, and a thermometer, and heat at 70-80°C while stirring. React under stirring for 6 hours, stop heating, and the salt-forming reaction is completed.

[0030] 2. Drying step

[0031] The granular product obtained by centrifugation of crystallization is dried in a drying oven in a stainless steel drying sieve with upper and lower air permeability. After 24 hours, the obtained product was sieved to obtain a finished product with a content greater than 99%.

Embodiment 3

[0033] The preparation method of this chromium stearate may further comprise the steps:

[0034] 1. Salt-forming reaction steps

[0035] Put 100 moles of stearic acid, 1500 moles of water, 65 moles of chromium oxide, and 40 moles of amine compounds into a 100-liter reactor with a heating device, electric stirring, and a thermometer, and heat at 70-80°C under stirring. React under stirring for 6 hours, stop heating, and the salt-forming reaction is completed.

[0036] 2. Drying step

[0037] The granular product obtained by centrifugation of crystallization is dried in a drying oven in a stainless steel drying sieve with upper and lower air permeability. After 24 hours, the obtained product was sieved to obtain a finished product with a product content greater than 99%.

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Abstract

The present invention relates to a kind of preparation method of chromium stearate, this method comprises the following steps: (1) salt-forming reaction step, stearic acid, chromium oxide, initiator, water are put into reactor, stir, heating reaction, make carbon dioxide overflow , to generate chromium stearate; (2) drying step, the granular product obtained by crystallization separation is dried in the upper and lower air-permeable drying sieves. The obtained product is sieved to obtain the product. The granular product obtained by the preparation method of the chromium stearate is easy to dry, reduces protection and equipment, saves equipment investment, and reduces operating costs.

Description

technical field [0001] The invention belongs to the field of organic compound preparation, in particular to a simple and effective preparation method of chromium stearate. Background technique [0002] Among the organic additives, chromium stearate, as an effective chromium mineral additive, has attracted more and more attention and has a wide application prospect. The usual production method of chromium stearate is to utilize sodium stearate to react with chromium sulfate, and the product obtained is a viscous substance, which is difficult to further process and difficult to purify. The problems in this type of preparation method: 1. In the further processing step, Repeated crystallization requires additional crystallization equipment, a lot of equipment, complex production costs are high, and it is difficult to reduce production costs; 2. The purity of the finished product is low and there is a lot of dust, which makes it difficult for enterprises to produce in large quant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C51/41C07C51/42C07C53/126
CPCC07C51/412C07C51/42C07C53/126
Inventor 张富强
Owner TIANJIN CHEM REAGENT RES INST
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